Highest temperature in Hong Kong on May 26?

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Market context

Hong Kong's maximum temperature on 26 May 2026 will be recorded by the Hong Kong Observatory and settled against whichever range bracket contains that day's absolute daily maximum. The settlement window closes at midday UTC on that date, meaning traders cannot resolve the contract until the Observatory has finalised its daily extract data. The 0% crowd-implied probability suggests the market has not yet attracted meaningful trading volume or that participants are awaiting clearer seasonal forecasting windows.

Hong Kong's late May climate sits at the threshold between spring and early summer, with historical daily maxima typically ranging between 28°C and 32°C during this period. The Observatory's records show considerable year-to-year variation; anomalously warm or cool patterns can shift outcomes by several degrees depending on monsoon positioning and upper-level atmospheric conditions. Comparable May dates from recent years provide the most reliable anchors for assessing probability distributions, though climate drift and specific synoptic patterns on any given date introduce irreducible uncertainty.

Traders should monitor seasonal forecasting updates from meteorological centres in the weeks preceding late May, particularly any signals regarding the East Asian summer monsoon onset timing and strength. The Observatory publishes monthly climate summaries and extended-range forecasts that may influence market positioning as the settlement date approaches. Current low engagement likely reflects the contract's distance from present conditions; activity typically concentrates in the final fortnight before resolution once deterministic weather models gain predictive skill.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Best Prediction Markets?

Zero. Best Prediction Markets routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Best Prediction Markets triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.